Method for the ceation of clearance holes

ABSTRACT

According to this invention, slots are made on the plane of any material; the depth of these slots is equal to half the thickness of the plane, plus the length of the radius of the stay bolt or stud to be entered, plus a tolerance margin; the slots have the required length and are made on two or more sides of the plane, in an alternate manner, so that the slot made on one side overlaps by a few millimeters the slot made on the opposite side, creating in such a way the space for the passage of a stay bolt and stud that serves as the anchorage for the various pieces that make up to object to be realized.

TECHNICAL FIELD

This invention related to a method to join together even differentmaterials through the creation of clearance holes allowing the entry ofstay bolts.

BACKGROUND OF ART

It is common knowledge that the creation of a number of objects quiteoften entails the recourse to junctions by means of tongue and groovejoint pins, eccentric joint pins, and L-shaped elements, made of metaland other materials, adhesives, and so on.

The solutions outlined above have been adopted worldwide since timeimmemorial, even though they are often inadequate from an aestheticpoint of view and, sometimes, they offer a poor resistance, particularlyto transverse stresses.

Besides, these solutions do not allow a great freedom of junction amongthe parts, particularly when one wants to join together parts withangles other than right angles.

FUNDAMENTALS OF INVENTION

The subject of this invention is a method to join together evendifferent materials through the creation of clearance holes allowing theentry of stay bolts.

According to this invention, slots are made on the plane of anymaterial. The depth of these slots is equal to half the thickness of theplane, plus the length of the radius of the stay bolt or stud to beentered, plus a tolerance margin.

The slots have the required length and are made on two or more sides ofthe plane, in an alternate manner, so that the slot made on one sideoverlaps by a few millimeters the slot made on the opposite side,creating in such a way the space for the passage of a stay bolt and studthat serves as the—anchorage for the various pieces that make up toobject to be realized.

Therefore, according to the method concisely described above, one maycreate seats of unlimited length for the passage of stay bolts or studs,while the thickness of the piece were the slots are made is determinedexclusively by the depth that the tool being used may reach.

The detailed description provided below may allow an improvedunderstanding of what has been briefly said until now by makingreference to the attached drawings, where:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the front view of a rectangular element worked according tothe method of this invention.

FIG. 2 shows a schematic view of how the slots are made on both sides ofthe part.

FIG. 3 shows a cross section of a slot made according to this invention.

FIG. 4 shows an axonometric view of a part worked according to thisinvention.

FIG. 5 shows a section axonometric of a part worked according to thisinvention.

FIG. 6 shows an axonometric view of a part worked on an angle accordingto this invention.

FIG. 7 shows a section axonometric of a part worked on an angleaccording to this invention.

FIG. 8 shows a side view of a bookcase realized with a part workedaccording to this invention.

FIG. 9 shows a front view of the bookcase referred to in FIG. 8.

FIG. 10 shows a front section view of the bookcase referred to in FIG.8.

FIG. 11 shows a top view of the bookcase referred to in FIG. 8.

DESCRIPTION OF INVENTION

With reference to these figures, the method for creating clearance holesaccording to this invention is based on the realization, on two or moresides of an element (1), for instance a wooden standard to be used in abookcase, of a series of slots (2) made alternatively in succession onside (2) and on the opposite side (4) of the element (1), along an axis,in such a way as to create a hole that is the result of the removal ofmaterial (3 a), taken off from side (3) and the removal of material (4a) taken off from the opposite side (4) (FIGS. 5-7). The clearance holehas the required length and its diameter is determined by half thethickness of the part being worked, plus the radius of the stay bold orcable, plus the tolerance of the materials that varies in relation tothe materials themselves.

The clearance hole(s) may be used in the assembly of the parts that makeup a piece of furniture such as, for instance, in the realization of abookcase for the passage of stay bolts that allow to make the side ofthe bookcase an integral part of the shelves, without having to resortto the traditional anchoring methods described above.

For instance, with reference to FIGS. 8, 9, 10, and 11, it may be easilyunderstood how the realization of the bookcase being shown is extremelysimplified by the presence along the standards (6) of the slots (2) thatallow the passage of the stud (8).

The stud (8) allows the various sections of the standards (8) to form anintegral part supporting the shelves (9) and to reach the requiredheight even though, at least in the front part, nothing is visible.

Furthermore, the sturdiness of the system that is the subject matter ofthis invention is determined both by the fact that, being the stay bolts(8) accommodated inside the structure, they are protected from anyimpact, and the fact that their position may not change by chancedepending on the stresses and size of the structure.

Obviously, in order to see that the stay bolts (8) carry out theirfunction in the best possible manner, they shall be preferably providedwith threaded ends for screwing terminals (10) which are to allow theadjustment of the tension of the stay bolts (8), even in relation to thematerial used to realize the object or, at least, the structure, butalso in relation to the weight to be sustained and the use the object isintended for.

As previously pointed out. FIGS. 6 and 7 clearly show that a clearancehole may be created on an angle of the piece being worked, making slots(2) close to the angle always according to the arrangements describedabove.

In case of holes to be created in elements having a considerable width,for instance beams, the slots may be realized alternatively on each oneof the four sides in such a way as to ensure the continuity in thematerial being removed and, therefore, the creation of the hole for thepassage of the stud or reinforcement. A wooden beam for the falsework ofa roof may represent an example of such an application.

It is clear that the possibility of creating clearance holes on thepieces to be assembled in order to accommodate cables or stay bolts ofany type and material allows the greatest possible freedom in therealization, doing away with the design-related limitations that arecurrently imposed by the customary means of aggregation and assemblysuch as shelves, adhesives, tongue and groove joint pins, and so on.

The recourse to the aforementioned method, for instance, makes it bothfeasible and easy to realize an orientation in the assembly of thestandard with respect to the shelf plane that is above or below 90,allowing in such a way the realization of bookcases or pieces offurniture where the design is not constrained by a right angle.

A further advantage that results from the application of theaforementioned method is that, being realizable on any material,including for instance Perspex, metal, wood and such artificialmaterials as plastics, it allows a joint to be made with no resultingproblem due to the different materials being used.

It is evident that even though a likely application of the method wassuggested with reference to the realization of a bookcase, this shouldnot be construed as a limitation to the likely fields of use of thismethod as it was merely provided as an example.

1. Method for the creation of clearance holes on a part being worked(1), where there is a side (3) and a side (4) which are either oppositeor adjacent, characterized by the fact that a series of slots (2) arealternatively made in succession and along an axis on the said sides (3)and (4) of the part (1), once on side (3) and once on side (4) of thesaid part, in such a way as to create a continuity between the materialtaken off for the realization of the slots (2) on side (3) and on side(4) and, in so doing, the removal of the material of the slots (2) formsa clearance hole at the centre of the thickness of the part on which theslots (2) have been made, and such a hole is useful for the passage ofstuds or cables.
 2. Method for the creation of clearance holes,according to the preceding claim, characterized by the fact that theclearance hole has the required length, while the depth of the slot isdetermined by half the thickness of the part being worked, plus theradius of the stay bolt or cable, plus the tolerance of the materials,and varies in relation to the materials themselves.
 3. Method for thecreation of clearance holes, according to the preceding claims,characterized by the fact that, if the slots are created on adjacentsides of the part, it becomes feasible to make clearance holes locatedclose to the angles.
 4. Method for the creation of clearance holes,according to the preceding claims, characterized by the fact that thetwo ends of the stud or cable (8) that acts as a stay bolt and isaccommodated within the clearance hole are threaded so that a terminaljoining the parts crossed by such a stud or cable may be screwed onthese ends.
 5. Method for the creation of clearance holes, according tothe preceding claims, characterized by the fact that the slots may bemade on any material whatsoever, so that the method allows to jointogether parts that may also be made of different materials.